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MCP Transport

Reviewed 19 July 2026 Canonical definition Part of: MCP & Agent Protocol Terms →

MCP transport is the communication channel used to carry messages between an MCP client and server. The two standard transports are stdio (standard input/output, used for local processes) and HTTP with Server-Sent Events (used for remote servers). Transport selection affects latency, deployment topology, and the security controls required to protect message integrity and confidentiality.

§01 / QUESTIONSterm: MCP Transport
Questions

Common questions.

What is MCP Transport?

MCP transport is the communication channel used to carry messages between an MCP client and server.

How is MCP Transport used in production?

The two standard transports are stdio (standard input/output, used for local processes) and HTTP with Server-Sent Events (used for remote servers). Transport selection affects latency, deployment topology, and the security controls required to protect message integrity and confidentiality.

Which terms are related to MCP Transport?

Closely related concepts include MCP Server Registry, MCP Prompt Template, MCP Roots, MCP Sampling. Each is defined in the Prefactor glossary.

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Where this fits.

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